Nero Portoro Marble Slabs

Nero Portoro Marble Slabs

Nero Portoro is a natural black stone with unique intense golden veins.The beauty is evident in the deep rich colours of the black and gold and it is this contrast that creates a most perfect combination of elegance found in no other stone.The vast crystalline black of its base is furrowed by a spectacular burst of golden veins and white effervescences.Architects and interior designers of recognized prestige have used it in superb designs of hotels and luxury villas. Nero Portoro marble astonishes in interiors, bathrooms, kitchens, worktops, showers and water areas.

Product Details

Production Photos of Realho Stone

Nero Portoro Marble Slabs

Black Portoro Marble Slabs,Golden Portoro Marble Slabs.

Portoro Marble also called “Negro Portoro marble, Portoro Black Gold Marble, Black Portoro marble, Portor Marble, Port Oro marble, Black Gold Marble, Oro De Nero Extra Marble, Nero Portoro Extra “, is a very unique marble of intense and brilliant black color and with gold vein and it is this contrast that creates a most perfect combination of elegance found in no other stone. originally the marble Portoro had called “mission yellow and black”, the  then replaced by that of “black jade of Portovenere.” 

nero portoro marble

nero portoro marble slabs

Subsequently takings the name of the place from where it was extracted, or rather “marble of Portovenere”; very later, after the French domination, it had called “marble Portoro” from the translation in Italian “porta oro” of the French denomination “Porte d'Or”.

Nero Portoro is an authentic black marble with varying degrees of gold veining throughout sedimentary rock quarried in Italy. This stone is especially good for Exterior - Interior wall and floor applications, countertops, mosaic, fountains, pool, and wall capping, and other design projects.

black portoro marble slabs

black portoro marble for tiles

black portoro marble for countertop

black portoro marble for stair steps

Thanks to its coloration and sketch, since the past, it was considered among the fittest materials to realizations of artistic importance. For his exceptional characteristics, t is a highly decorative marble and can be used in any decorative surfaces such as floor walls, features, and firewalls, and exclusive projects.

Production Description of Realho Stone

Basic Info

Product Name

 Nero Portoro Marble, Black Portoro Marble, Gold Portoro Marble

Surface finished

normally polished, honed

Available         Product

marble   floor and wall tiles, marble bathroom vanity top, marble kitchen countertop,   marble steps & riser stairs, marble window sills, marble mosaic, marble   borders, marble skirting, marble columns, marble baluster

Popular Size

Big slab

Big slab Size 2400 upx1200up mm, 

thickness 1.6cm, 1.8cm, 2cm and 3cm .

Other customized thickness can be cut from blocks


1) 305 x 305 x 10mm or 12" x 12" x 3/8"

2) 406 x 40 6x 10mm or 16" x 16" x 3/8"

3) 457 x 457 x  10mm or 18" x 18" x 3/8"

4) 300 x 600 x 20mm or 12" x 24" x 3/4"

5) 600 x 600 x 20mm or 24" x 24" x 3/4" ect custom sizes

Quality Control

1) Thickness tolerance: +/-0.5mm 

2) Diagonal tolerance : +/-1mm.

3) match the veins according to the nt's picture of veins requests.

4)Slabs will be checked piece by piece by opening bundles.


Professional triple burning in the oven, which makes our tiles more excellent quality   floor tiles and wall tiles

Packing& Delivery

wooden bundles or crates with fumigation.

Company Info.


About Us of Realho Stone


Poject show and Poject LIsts


Contact Us of Realho Stone

1. How can I get a sample?

We can offer free samples.

But for sample cost, you can pay it to us by western union or we send the sample to you as freight collected.

The delivery cost for samples will be returned as soon as the order is confirmed.

2. What kind of certificates do you have?

CE,SGS,SASO,COC are available.

And we can arrange to issue other certificates according to the client's request.

3. What's your after-sale service?

For those damages caused by transportation, we will buy insurance for you and you can turn to insurance 

company when there is a problem caused by transportation.

If the problems are caused by our factory, we will be responsible for them.

Contact Us of Realho Stone

Contact person:Ms.Vickie Liu

Whatsapp /  what ID:0086 136 9501 2935.

Welcome per your inquiry.

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